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Hydrogen's Crucial Role in a Decarbonised Future


As the global community strives for a greener, more sustainable future, hydrogen has emerged as a promising clean energy carrier with the potential to revolutionise various sectors, including power, transportation, industry, and energy storage. This versatile element can play an essential role in the worldwide effort to decarbonise and reduce greenhouse gas emissions. In this blog post, we'll discuss hydrogen's potential, its production methods, applications, and the challenges and opportunities associated with its large-scale deployment. As experts in engineering and design for renewable energy and power projects, JCM Consultant Engineers is dedicated to helping clients navigate the complexities of emerging technologies like hydrogen. Discover more about our services at

Hydrogen Production Methods

Hydrogen can be produced through various methods, which are generally categorised as "grey," "blue," or "green," based on their carbon footprint:

Grey Hydrogen: Produced through steam methane reforming (SMR), this method uses natural gas as the primary feedstock, emitting carbon dioxide as a byproduct. Grey hydrogen currently accounts for the majority of global hydrogen production but contributes to greenhouse gas emissions.

Blue Hydrogen: Similar to grey hydrogen, blue hydrogen is also produced through SMR. However, the process incorporates carbon capture and storage (CCS) technology to significantly reduce carbon dioxide emissions.

Green Hydrogen: Produced through the electrolysis of water using renewable energy sources like solar, wind, or hydro, green hydrogen is the most environmentally friendly option, as it generates zero greenhouse gas emissions.

Applications of Hydrogen in a Decarbonised Future

Transportation: Hydrogen can be used as a fuel for vehicles equipped with fuel cells, emitting only water as a byproduct. Hydrogen-powered vehicles, such as cars, buses, and trucks, can contribute to reducing emissions in the transportation sector. With JCM Consultant Engineers' expertise, we can support the design and implementation of hydrogen infrastructure for transportation projects.

Hydrogen use in power production offers a clean and efficient way to generate electricity while reducing greenhouse gas emissions. There are two primary methods for using hydrogen to produce electricity: hydrogen combustion turbines and fuel cells.

Hydrogen combustion turbines work similarly to natural gas turbines, with the primary difference being the fuel type. Hydrogen is burned in a combustion chamber, and the expanding hot gases drive a turbine, which is connected to an electric generator. The electricity produced can then be supplied to the power grid.

Hydrogen combustion turbines have the advantage of producing almost no harmful emissions, as the primary byproduct of hydrogen combustion is water vapor. Additionally, these turbines can be easily integrated into existing natural gas power plants by modifying the fuel supply and combustion systems to accommodate hydrogen. This flexibility enables a gradual transition from natural gas to hydrogen as the primary fuel source, facilitating the decarbonisation of the power sector.

Fuel cells are electrochemical devices that convert the chemical energy of hydrogen and oxygen directly into electricity and heat without combustion. In a typical proton-exchange membrane (PEM) fuel cell, hydrogen is supplied to the anode, where it is separated into protons and electrons. The protons pass through a membrane to the cathode, while the electrons travel through an external circuit, generating electricity. At the cathode, oxygen from the air combines with the protons and electrons to form water, the primary byproduct of the process.

Fuel cells are highly efficient, with electrical efficiency ranging from 40% to 60% and overall efficiency (including heat recovery) of up to 90%3. They can be used in various applications, from small-scale residential power generation to large-scale utility power plants. Fuel cells can also provide backup power for critical infrastructure, ensuring a reliable energy supply during grid outages.

The use of hydrogen in power production can contribute to the decarbonisation of the energy sector and support the integration of renewable energy sources. By storing excess renewable energy as hydrogen, energy can be supplied back to the grid during periods of high demand or low renewable generation, thus enhancing grid stability and reliability.

Industry: Hydrogen can serve as a feedstock and energy source for various industries, such as steel and cement production, which typically rely on carbon-intensive processes. By replacing traditional fossil fuels with hydrogen, these industries can significantly reduce their carbon emissions. JCM Consultant Engineers can provide crucial guidance and support for industries transitioning to hydrogen-based processes.

Energy Storage: Hydrogen can be used to store surplus renewable energy, addressing the intermittency issues associated with solar and wind power. Stored hydrogen can be converted back into electricity using fuel cells or used in various industrial processes, offering a flexible and efficient energy storage solution. JCM Consultant Engineers has extensive experience in designing and delivering power, renewable energy, and energy storage projects, ensuring optimal results for clients.

Challenges and Opportunities

Despite its potential, hydrogen faces several challenges that must be addressed to ensure its widespread adoption:

Cost: Green hydrogen production is currently more expensive than grey or blue hydrogen, mainly due to the high costs associated with electrolysis. However, as the technology matures and economies of scale come into play, green hydrogen costs are expected to decline.

Infrastructure: The development of a robust hydrogen infrastructure, including production facilities, storage, distribution, and refuelling stations, is essential for its large-scale deployment. JCM Consultant Engineers can help design and deliver the necessary infrastructure to support hydrogen adoption.

Public Awareness and Acceptance: To ensure the success of hydrogen technologies, it's crucial to educate the public about its benefits and address concerns related to safety and reliability.

Here's how they can assist clients:

JCM Consultant Engineers, with their expertise in engineering and design for renewable energy and power projects, is well-positioned to provide engineering and project support services that align with and complement the UK Government's hydrogen-related policies, initiatives, and research. By leveraging their industry experience and technical knowledge, we can help clients successfully navigate the complexities of hydrogen projects, from concept to completion. Here are some ways in which they can offer support:

Feasibility Studies and Site Assessments: we can conduct thorough feasibility studies and site assessments to determine the viability of hydrogen projects, considering factors such as infrastructure requirements, resource availability, and environmental impacts.

We are committed to helping clients achieve their ambitions in line with the UK Government's hydrogen policies and initiatives. By offering comprehensive engineering and project delivery services, JCM Consultant Engineers can guide clients through every stage of their hydrogen projects, ensuring they meet the highest standards in efficiency, sustainability, and compliance.

Concept and Design: We are able develop innovative and efficient hydrogen infrastructure designs that align with clients' objectives and the latest industry best practices. This includes designing production facilities, storage systems, distribution networks, and end-use applications such as hydrogen refuelling stations.

Regulatory Compliance and Permitting: Navigating the complex regulatory landscape can be challenging for clients. JCM Consultant Engineers can provide guidance and support in obtaining necessary permits, ensuring projects comply with relevant laws, regulations, and industry standards.

Project Management and Coordination: Effective project management is crucial for the successful implementation of hydrogen projects. We will oversee and coordinate project activities, from planning and execution to monitoring and control, ensuring smooth delivery within budget and time constraints.

Technical Advisory Services: We also offer expert advice on the latest hydrogen technologies, industry trends, and best practices, helping clients make informed decisions and optimise their hydrogen projects for maximum efficiency and sustainability.

System Integration and Commissioning: We are able assist clients in integrating hydrogen systems with existing infrastructure, ensuring seamless operation and minimising downtime. They can also oversee the commissioning process, verifying that systems function correctly and meet performance expectations.

Health, Safety, and Environmental Management: Our team of experts can help clients establish and maintain robust health, safety, and environmental management systems for their hydrogen projects, reducing risks and ensuring compliance with relevant regulations and standards.

By offering a comprehensive suite of engineering and project delivery services, JCM Consultant Engineers can help clients successfully implement hydrogen projects that align with the UK Government's policies and initiatives, contributing to a greener and more sustainable future.

UK Policy and Initiatives.

The Ten Point Plan for a Green Industrial Revolution (2020): The UK Government's plan outlines ten key areas for investment and innovation, with hydrogen being one of the focal points. The plan aims to generate 5GW of low-carbon hydrogen production capacity by 2030, supporting a range of applications across the economy.

UK Hydrogen Strategy (2021): This strategy sets out the government's vision for the role of hydrogen in achieving net-zero emissions by 2050, including the support and development of hydrogen production, storage, distribution, and end-use applications.

Net Zero Strategy (2021): This comprehensive strategy outlines the government's plan to achieve net-zero emissions by 2050. The strategy highlights the importance of hydrogen in decarbonising various sectors, including transportation, industry, and heating.

The Climate Change Committee (CCC) - Sixth Carbon Budget (2020): The CCC's Sixth Carbon Budget provides advice to the UK Government on the level of emissions reductions required by 2035 to meet the country's climate targets. The report includes recommendations on the role of hydrogen in the energy transition.

These resources provide valuable information on the UK Government's vision, policies, and initiatives related to the development of a hydrogen economy, as well as insights into the challenges and opportunities that lie ahead in achieving a net-zero emissions future.

Technology References

U.S. Department of Energy (DOE) - Hydrogen in Natural Gas Turbines:

International Renewable Energy Agency (IRENA) - Hydrogen from Renewable Power:


Hydrogen has the potential to be a key player in the global transition to a decarbonised future, offering a sustainable and versatile solution for various sectors. As the technology continues to evolve and green hydrogen becomes more accessible, it can significantly contribute to the reduction of greenhouse gas emissions. Collaboration between governments, businesses, and organisations like JCM Consultant Engineers is essential to overcome the challenges and seize the opportunities that hydrogen presents.

By investing in research, development, and infrastructure, we can unlock the full potential of hydrogen as a clean energy carrier and pave the way for a greener, more sustainable future. With the support and expertise provided by JCM Consultant Engineers, project delivery can be streamlined, ensuring the successful implementation of hydrogen-based solutions. Visit to learn more about how we can help drive the hydrogen revolution.


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